package/tz: install missing files

As for the tzdata package, install the missing files:
  - zone.tab   : {country-code,coordinates,timezone} tuples
  - iso3166.tab: {country-code,country} tuples

Reported-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/tz/tz.mk

@@ -20,6 +20,10 @@ define TZ_BUILD_CMDS
 endef
 
 define TZ_INSTALL_TARGET_CMDS
+	$(INSTALL) -D -m 0644 $(HOST_DIR)/usr/share/zoneinfo/zone.tab \
+			      $(TARGET_DIR)/usr/share/zoneinfo/zone.tab
+	$(INSTALL) -D -m 0644 $(HOST_DIR)/usr/share/zoneinfo/iso3166.tab \
+			      $(TARGET_DIR)/usr/share/zoneinfo/iso3166.tab
 	mkdir -p $(TARGET_DIR)/usr/share/zoneinfo/uclibc
 	cp -a $(@D)/output/* $(TARGET_DIR)/usr/share/zoneinfo/uclibc
 	if [ -n "$(TZ_LOCALTIME)" ]; then                               \